In our life, PVC waterproof card sleeve has always played an indispensable role. Actually, it is not only waterproof function. Today, let's take a look at the new waterproof card sets made by the new technology, and look at its strength.

PVC waterproof jacket:

Material: high light transparent PVC, waterproof bone strip

Process: high frequency automatic pressing

1, has the waterproof function, as long as the sealed bone seal is sealed well, the whole product is put into water and soaked in water. It will not enter the water. Like the general inferior waterproof card set, the whole product is put into the water, and the water will be seen slowly into the inside, with high seal.